{"action":"Upgrade fastfeedparser to 0.5.10 or later.","affected":[{"fixed":"0.5.10","introduced":"0"}],"component":"fastfeedparser","cve_ids":["CVE-2026-39376"],"ecosystem":"PyPI","epss":0.00328,"exploited":false,"fixed_versions":["0.5.10"],"ghsa_id":"GHSA-4gx2-pc4f-wq37","id":"tcs_01M5KHCCSEJGR2JZAN1S8EV5PC","modified_at":"2026-05-20T09:19:00.162749Z","published_at":"2026-04-07T20:16:32.450Z","references":["https://osv.dev/vulnerability/PYSEC-2026-60","https://github.com/kagisearch/fastfeedparser/security/advisories/GHSA-4gx2-pc4f-wq37"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"PYSEC-2026-60","url":"https://osv.dev/vulnerability/PYSEC-2026-60"}],"summary":"FastFeedParser is a high performance RSS, Atom and RDF parser. Prior to 0.5.10, when parse() fetches a URL that returns an HTML page containing a <meta http-equiv=\"refresh\"> tag, it recursively calls"}